OSR1 and acute myeloid leukemia: In contrast, when compared to hFK, AML cells exclusively over‐expressed OSR1 (Fig 8C), with SV7 demonstrating comparable expression levels of SIX2. Of note, both OSR1 and SIX2 have been previously shown to be expressed in mesenchymal tissues (Fogelgren et al, 2008; Stricker et al, 2012).